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UNITED STATES PATENT OFFICE.

HENRY G. C ROWELL, OF ROXBURY, MASSACHUSETTS.

PUMP.

Specification of Letters Patent No. 32,356, dated May 21, 1861.

To all whom it may concern:

Be it known that I, HENRY G. CRowELL, of Roxbury, in thel county of Norfolk and lommonwealth of Massachusetts, have invented a new and useful Mode of Operating Pump-Brakes and other Levers; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation ofthe same, reference being had to the accompanying drawings,

`forming a part ofrthis specification, in

which- Figure 1 is a plan of the mechanism on the under side of the platform, &c. Fig. 2 is a side elevation showing parts not seen in Fig. 1.

Like parts are indicated by the same characters in both figures.

To enable others skilled in the art to make and use my invention, I will now describe its construction and operation.

A is a platform of plank, or boards, resting on legs, a2, one at each of its corners.

B is a shaft passing' through, and turning in, the platform, A.

P is a lever, or radius, of the shaft, B, by means of which the latter is rotated by men, or animals, traveling in a circle on the platform.

C is a wheel, of wood or iron, fast to the lower end of shaft, B, and provided with three cams, 1,'2, 3, as represented in Fig. 1.

I), D, D, are friction wheels turning in suitable slots on pivots, (Z, d, (Z, in the eX- tremities of cams 1, 2, 3.

E and F are vibrating arms attached to the under side `of the platform by means of pivots e and f. The free ends of these arms are connected by means of a strip 0f metal, G, and pins, L, h, as represented in Fig. 1. The design of strip, G, is to bring the arms, E and F, into the proper position to be acted upon alternately by the wheels, D, in the cams. Thus, in Fig.` 1, the wheel, C, rotating in the direction represented by the arrow, and cam 2 acting on arm E, the strip, G, has brought the end of arm, F, to cam 3, and into the proper position `to be acted upon by it; and as cam, 3, leaves arm, F, arm, E, will be brought back by means of strip, VG, so as to be actuated by cam 1.

J is a rope, or chain, attached to pin, it, in arm, F, and passing around pulleys,I and L, as represented in Fig. 1, through a hole in the platform, and up to the end of beam, S, to which it is fastened, (vde Fig. 2.) Pulley, I, turns on a pin, or screw, entering the platform; and pulley, L, turns on a pivot in the stud, Z. K is another rope, or chain, attached to pin, L, in arm, E, and passing around pulley, M, (which turns on a pivot in stud,"m,) and up through a hole in the platform, to the other extremity of beam, S, (see Fig. 2) to which it is attached.'

N is a post, the'lower end of which is fast in the platform, the upper end being slotted and provided with a pivot which passes through the center of beam, or lever, S.

Thus, it is obvious from the above description, that by rotating the lever, P, by any power that may be applied, a vibrating motion will be communicated to the beam, or lever, S. y

O, O are pumps; the rods, 0', 0, heilig connected to beam, S, as shown in 2. It is obvious, however, that beam, S instead of being a pump-brake, may be used as a lever for any of the purposes to which the latter is ever applied.

I am aware that reciprocating movements have been produced in sewing machines,

pumps, churns and saws by the action of cam wheels upon rods levers,&c. This I do not broadly claim; but

Vhat I claim as my invention and desire to secure by Letters Patent is,

The combination and arrangement of the cam-wheel C, arms E and F, connecting strip G, ropes or chains J and K, pulleys I, L and M, and pump brake, or lever, S, substantially as, and for the purpose, described.

HENRY G. GROVELL.

litnesses N. AMES, I-I. A. SCUDDER. 

